Solved

operator+ question in C++

Posted on 2009-05-03
9
512 Views
Last Modified: 2012-08-14

hello group,

What is wrong with the following code?

The program is not working after this line:
 
 PiggyBank Combined = bank1 + bank2;



PiggyBank bank1;
PiggyBank bank2;
bank1.setSize( 20 );
bank1.feedCoins( 10, 1, 0, 1 );
bank2.setSize( 20 );
bank2.feedCoins( 10, 0, 0, 0 );
PiggyBank combined = bank1 + bank2;
cout << "combined's value is: " << combined.getValue( ) / 100 << "." <<
     combined.getValue( ) % 100 << endl;

PiggyBank other = combined - bank1;
cout << "other's value is: " << other.getValue( ) / 100 << "." <<
     other.getValue( ) % 100 << endl;
if (combined > other) {
  cout << "looks like combined is bigger..." << endl;
}
else {
  cout << "looks like other is bigger..." << endl;
}

if (bank1 > other) {
  cout << "looks like bank1 is bigger..." << endl;
}
else {
  cout << "looks like other is bigger..." << endl;
}
if (bank2 < bank1) {
  cout << "looks like bank2 is smaller..." << endl;
}
else {
  cout << "looks like bank1 is smaller..." << endl;
}
 

 
Thanks.

0
Comment
Question by:akohan
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
9 Comments
 
LVL 86

Expert Comment

by:jkr
ID: 24292055
>>What is wrong with the following code?

The important part is missing ;o)
0
 

Author Comment

by:akohan
ID: 24292323

missing ?!
0
 
LVL 11

Expert Comment

by:DeepuAbrahamK
ID: 24292491
Could you please show your class PiggyBank and its function implementation?
Best Regards,
Deepu Abraham K
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:akohan
ID: 24292714

Sure,

#ifndef PIGGYBANK_H
#define PIGGYBANK_H

#include <iostream>
using namespace std;

class PiggyBank {
public:
      PiggyBank( );

      int  getValue( );
      void setSize( int size );
      int  getSize( );
      int  getCoins( );

      void feedCoins( int quarters, int dimes, int nickels, int pennies );
      int  breakOpen( );
private:
      int  myValue;           // the monetary value of this piggybank, in pennies
      int  myNumberOfCoins;   // the actual number of coins in this bank
      int  mySize;            // the most coins this bank can possibly hold
};

#endif

0
 
LVL 11

Expert Comment

by:DeepuAbrahamK
ID: 24292801
You need to implement few functions:
copy constructor
+ operator overloading

0
 
LVL 11

Expert Comment

by:DeepuAbrahamK
ID: 24292802
- operator overloading aswell
0
 
LVL 11

Assisted Solution

by:DeepuAbrahamK
DeepuAbrahamK earned 50 total points
ID: 24292834
0
 
LVL 53

Expert Comment

by:Infinity08
ID: 24293382
>> The program is not working after this line:

How is it not working ? What do you see, and what did you expect ?

Could you post all of the code ?
0
 
LVL 39

Accepted Solution

by:
itsmeandnobodyelse earned 75 total points
ID: 24298268
You would need to add something like

  friend PiggyBank operator+(const PiggyBank& pb1, const PiggyBank& pb2)
  {
      PiggyBank pb;
 
      ...
      return pb;
  }

to your class definition.

The ... should be replaced by code where you assign the members myValue, mySize, ... of pb with appropriate values computed from the input objects.

>>> You need to implement few functions:
>>> copy constructor
Copy constructor wasn't needed as the compiler will create one for you which simply makes a copy of the three int members what is good so.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Article by: SunnyDark
This article's goal is to present you with an easy to use XML wrapper for C++ and also present some interesting techniques that you might use with MS C++. The reason I built this class is to ease the pain of using XML files with C++, since there is…
What is C++ STL?: STL stands for Standard Template Library and is a part of standard C++ libraries. It contains many useful data structures (containers) and algorithms, which can spare you a lot of the time. Today we will look at the STL Vector. …
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question